ArticleThoracic cancer2019
Intrathoracic amyloid tumors that presented as yellowish multinodular endobronchial protrusions with irregular vascularity and easy bleeding.
Article in Thoracic cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors at 2 institutions in 1 country.
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Abstract
Immunoglobulin light-chain (AL) amyloidosis is a monoclonal plasma cell neoplasm that has a tendency to bleed easily. However, the potential risks of transbronchial biopsy in such cases have not been fully proven. Here, we report a case of parotid and intrathoracic AL amyloid tumors that presented as endobronchial protrusions that bled easily. Bronchoscopy under conventional white light and narrow band imaging revealed yellowish multinodular protrusions, in which irregular tortuous or dotted vessels were observed. Unexpectedly, biopsy of the lesion resulted in persistent bleeding. The biopsy specimen showed a large amount of amyloid deposition and calcification directly under the bronchial epithelium, as well as amyloid deposits in the blood vessel walls. In patients suspected to have amyloidosis, the presence of yellowish multinodular endobronchial protrusions, particularly with irregular vascularity, should prompt careful attention to avoid fatal postprocedural bleeding.
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